30138859 has 8 divisors (see below), whose sum is σ = 31293360. Its totient is φ = 28992096.

The previous prime is 30138839. The next prime is 30138887. The reversal of 30138859 is 95883103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30138859 - 2¹¹ = 30136811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30138839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6724 + ... + 10270.

It is an arithmetic number, because the mean of its divisors is an integer number (3911670).

Almost surely, 2^30138859 is an apocalyptic number.

30138859 is a deficient number, since it is larger than the sum of its proper divisors (1154501).

30138859 is a wasteful number, since it uses less digits than its factorization.

30138859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 30138859 is about 5489.8869751571. The cubic root of 30138859 is about 311.2019208220.

The spelling of 30138859 in words is "thirty million, one hundred thirty-eight thousand, eight hundred fifty-nine".